P
US6737152B2ExpiredUtilityPatentIndex 80

Protective layer transfer sheet and print

Assignee: DAINIPPON PRINTING CO LTDPriority: Feb 19, 2001Filed: Feb 14, 2002Granted: May 18, 2004
Est. expiryFeb 19, 2021(expired)· nominal 20-yr term from priority
Inventors:SUZUKI SHINOHIROTA KENICHI
B41M 5/38264Y10T428/24802B41M 7/0027
80
PatentIndex Score
15
Cited by
6
References
8
Claims

Abstract

A protective layer transfer sheet is provided that can form by transfer a protective layer which possesses high weathering resistance and, when formed onto an image, can prevent a dye in the image from being transferred or fused to a vinyl chloride case, can prevent the dye constituting the image being faded upon exposure to light, can additionally impart good fastness to water, alcohols and the like, and thus can impart excellent fastness properties to a print. A print produced by using the protective layer transfer sheet is also provided. The protective layer transfer sheet comprises: a substrate sheet; and a thermally transferable protective layer provided on at least a part of one side of the substrate sheet, the protective layer being formed of a laminate having a multilayer structure comprising at least a layer composed mainly of an acrylic resin and a layer composed mainly of a polyester resin provided in that order on the substrate sheet.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
       1. A protective layer(s) transfer sheet comprising: a substrate sheet; and thermally transferable protective layer(s) provided on at least a part of one side of the substrate sheet, said protective layer(s) being formed of a laminate having a multilayer structure comprising at least a layer composed mainly of an acrylic resin and a layer composed mainly of a polyester resin provided in that order on the substrate sheet, wherein the polyester resin comprises an alicyclic compound contained in at least one of a diol component and an acid component, and/or has, in one molecular chain, one or more aromatic dicarboxylic acids containing a sulfonic acid substituent or a group of a salt thereof. 
     
     
       2. The protective layer(s) transfer sheet according to  claim 1 , wherein the acrylic resin is an acrylic copolymer composed mainly of polymethyl methacrylate. 
     
     
       3. The protective layer(s) transfer sheet according to  claim 1 , wherein the alicyclic compound in the polyester resin is tricyclodecanemethanol, cyclohexanedicarboxylic acid, cyclohexanedimethanol, or cyclohexanediol. 
     
     
       4. The protective layer(s) transfer sheet according to  claim 1 , which further comprises a release layer between the protective layer(s) and the substrate sheet. 
     
     
       5. The protective layer(s) transfer sheet according to  claim 1 , which further comprises an adhesive layer stacked on the protective layer(s). 
     
     
       6. The protective layer(s) transfer sheet according to  claim 1 , wherein the layer composed mainly of the polyester resin and/or the adhesive layer contains an ultraviolet absorber. 
     
     
       7. The protective layer(s) transfer sheet according to  claim 1 , wherein an organic filler and/or an inorganic filler is/are contained in an outermost surface layer provided on the substrate sheet in its side remote from the protective layer(s). 
     
     
       8. A print comprising: a substrate sheet; at least a dye-colored image provided on at least one side of the substrate sheet; and a protective layer(s) provided so as to cover at least a part of the printed face in the print, said protective layer(s) having been formed by transfer using the protective layer(s) transfer sheet according to  claim 1 .

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